RGB - HEX Converter

Javascript

RGB - HEX Converter

HiroDaegu 2022. 11. 19. 11:35

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<html lang="en">

<head>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>RGB-Hex Converter</title>
    <!--Google Font-->
    <link href="https://fonts.googleapis.com/css2?family=Poppins:wght@400;600&display=swap" rel="stylesheet">
    <!--Stylesheet-->
    <link rel="stylesheet" href="style.css">
    <!--Script-->
    <script defer src="main.js"></script>
</head>

<body>
    <div class="container">
        <div class="wrapper">
            <label for="rgb">RGB</label>
            <input type="text" id="rgb" oninput="toHex()" placeholder="ex) rgb(50,100,150)">
        </div>
        <div class="wrapper">
            <label for="hex">HEX</label>
            <input type="text" id="hex" oninput="toRgb()" placeholder="#667ABA">
        </div>
    </div>

</body>

</html>

*{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    font-family: "Poppins",sans-serif;
}
body{
    width: 100%;
    background-color: #976efa;
}
.container{
    background-color: #ffffff;
    width: 80vmin;
    min-width: 250px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 50px;
    position: absolute;
    transform: translate(-50%,-50%);
    top: 50%;
    left: 50%;
    padding: 50px 10px;
    border-radius: 5px;
}
.wrapper{
    width: 230px;
}
label{
    font-weight: 600;
}
input{
    width: 100%;
    padding: 5px 0;
    outline: none;
    border: none;
    border-bottom: 2px solid #404050;
    font-size: 20px;
    font-weight: 400;
    margin-top: 5px;
}

let hexInput = document.getElementById("hex");
let rgbInput = document.getElementById("rgb");

window.onload = () => {
  hexInput.value = "";
  rgbInput.value = "";
};

function valid(element) {
  element.style.color = "#202040";
}

function invalid(element, otherElement) {
  element.style.color = "#f04624";
  otherElement.value = 0;
}

function toRgb() {
  let hexCode = hexInput.value;
  let rgbArr = [];
  if (/^#?[A-Fa-f0-9]{6}$/.test(hexCode)) {
    valid(hexInput);
    hexCode = hexCode.split("#")[1] || hexCode;
    for (let i = 0; i < hexCode.length; i += 2) {
      rgbArr.push(parseInt(hexCode[i] + hexCode[i + 1], 16));
      console.log(rgbArr);
    }
    rgbInput.value = "rgb(" + rgbArr + ")";
    document.body.style.backgroundColor = "rgb(" + rgbArr + ")";
  } else {
    invalid(hexInput, rgbInput);
  }
}

function toHex() {
  let rgbCode = rgbInput.value;
  let rgbRegex1 = /^rgb\([0-9]{1,3},[0-9]{1,3},[0-9]{1,3}\)$/;
  let rgbRegex2 = /^[0-9]{1,3},[0-9]{1,3},[0-9]{1,3}$/;
  let hex = "#";
  if (rgbRegex1.test(rgbCode) || rgbRegex2.test(rgbCode)) {
    rgbCode = rgbCode.replace(/[rgb()]+/g, "") || rgbCode;
    rgbCode = rgbCode.split(",");
    let condition = rgbCode.every((value) => {
      return parseInt(value) <= 255;
    });
    if (condition) {
      valid(rgbInput);
      rgbCode.forEach((value) => {
        value = parseInt(value).toString(16);
        hex += value.length == 1 ? "0" + value : value;
      });
      hexInput.value = hex;
      document.body.style.backgroundColor = hex;
    } else {
      invalid(rgbInput, hexInput);
    }
  } else {
    invalid(rgbInput, hexInput);
  }
}

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